期刊
WASTE MANAGEMENT
卷 34, 期 11, 页码 1984-1991出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.wasman.2014.07.015
关键词
Anaerobic co-digestion; Biogas production; Cattle manure; Kinetic model; Palm pressed fiber
资金
- National Key Technology Research and Development Program of China during the 12th Five-Year Plan Period [2012BAD47B02, 2012BAD14B03]
- Jiangsu Key Laboratory for Biomass-based Energy and Enzyme Technology [JSBEET1221]
Palm pressed fiber (PPF) and cattle manure (CM) are the waste which can be managed properly by anaerobic co-digestion. The biogas production in co-digested PPF and CM at three volatile solids (VS) ratios of 3:1, 1:1, and 1:3 was investigated in a series of batch experiments at an organic loading rate of 30.0 g VS/L under mesophilic (37 +/- 1 degrees C) conditions. The highest daily biogas yield of PPF and CM only, was 90.0 mL/g VSadded at day 12 and 23.4 mL/g VSadded at day 7. For co-digestion of PPF/CM at mixing ratios of 3:1, 1:1 and 1:3, there were 93.6 mL/g VSadded at day 11, 86.8 and 26.4 mL/g VSadded at day 8. VS removal rate for PPF, CM, and co-digestion at mixing ratio of 3:1, 1:1, and 1:3 were 91.1%, 86.0% and 71.0%, respectively. The anaerobic digestion of PPF and CM and their co-digestion systems were stable in operation with low range of volatile fatty acids (VFA)/TIC (total inorganic carbon) of (0.035-0.091). The main volatile fatty acids were propionic, and iso-butyric acids for PPF, iso-butyric and n-butyric acids for CM. The VFAs and ammonium inhibition were not occurred. The modified Gompertz model can be used to perform a better prediction with a lower difference between the measured and predicted biogas yields. A VS ratio of 3:1 is recommended for practice. (C) 2014 Elsevier Ltd. All rights reserved.
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